[PDF] Top 20 Coffee leaf miner resistance

... adult coffee leaf miners feed on honeydew, a sugary solution excreted by aphids that suck sap from the plants (Speer, 1949; Crowe, ...susceptible coffee plants (Notley, 1948), with the largest number ... See full document

... Although no molecular marker was identified here, this exploratory study may be important for future understanding of genetic events involved during interspecific crosses, especially those involving polyploid species. In ... See full document

... assist coffee breeding programs may contribute to save time for the development of new ...the coffee molecular markers presently available have shown limited ...new coffee molecular markers, such as ... See full document

... by coffee trees around noontime to allow for values above ...seasonal leaf area ...the leaf area index (L) up to ...canopy leaf area to the planted area (Ritchie and Burnett, 1971; Fuchs et ... See full document

... Bacteria were isolated from plants using the method of Hill & Purcell (1995) and adapted to citrus by Almeida et al. (2001). The petiole and part of the mid- vein of sampled leaves were cut from the leaf, ... See full document

... The leaf surface of coffee is inhabited by an extraordinary diversity of ...attack coffee plants, especially the coffee rust Hemileia vastatrix ...by coffee rust during the reproductive ... See full document

... in resistance in “Hibrido de Timor” derivatives observed in ‘Oeiras MG 6851’ also seemed to be occurring in ‘Acauã’ (“Sarchimor” x “Mundo Novo”), ‘Araponga MG 1’ (“Catuaí” x “Hibrido de Timor”), ... See full document

... Juvenile plants of MS INTA 416 (JN12009) (growth stages 22 to 29, according to Zadoks et al. (1974)) are semi-erect, with a recurved flag leaf at the beginning of inflorescence emergence (GS 52). At maturity (GS ... See full document

... Even though a relatively small number of en- dophytic bacteria were tested, promising results were obtained regarding the selection of coffee leaf rust biocontrol agents. Further field studies must be con- ... See full document

... and fixation from the atmosphere. Among the fertilizers, the urea is widely used in nitrogen fertilization because of its relatively low cost, easy management and high N concentration (45- 46%). Besides these advantages, ... See full document

... Breeding programs have produced hybrid plants witch superior agronomical features. The Siriema genotype, which was developed by the breeding program carried out by Procafé Foundation, is the result of the cross between ... See full document

... this resistance (Mata et ...of coffee plant under the conditions of an infested area in the field allows better knowledge of plant behavior and verifies the stability of plant reaction (Alpizar et ... See full document

... The general combining ability (GCA) refers to the average behavior of an inbred parent in a series of hybrid combinations, and it is associated to the ad- ditive action of the genes. The specific combining ability (SCA) ... See full document

... Gene mapping indicated that the spl30 locus was lo- cated on the long arm of chromosome 9, a location not pre- viously reported for spotted leaf mutant genes. RT-PCR showed that the expression of some spl genes ... See full document

... Considering that carbon fixation, the usual main sink for the absorbed PAR in chloroplasts, was depressed, especially in FS and SA plants and particularly in the afternoon, adjustments in light capture, use and ... See full document

... The family Gracillariidae includes small-sized moths with white marks on the wings and is considered the main group of lepidopteran leaf-miners in the world (Davis 1987). Most species of this family have a ... See full document

... more leaf dimensions (length and width) is an economical, quick, reliable, non-destructive method that can be applied in situ (Beerling & Fry, 1990; Fallovo et ...as leaf morphology (length/width ... See full document

... Urediniospores were collected from coffee leaves with pustules in the field and their viability was assessed before plants inoculation. For this purpose, a total of 125 µL of a suspension of urediniospores was ... See full document

... with coffee plants, was evaluated as green manures in the management of Cercospora coffeicola under field conditions in Carlópolis and Jacarezinho counties in the state of Paraná in the crop seasons of 2008/2009 ... See full document

... and leaf dry mass yield, regrowth, and height, and lower incidence of leaf ...for leaf production and resistance to leaf spot and for ‘Tanzania’ grass as parent has resulted in better ... See full document